Safety attachment for burners



J. H. REVESON SAFETY ATTACHMENT FOR BURNERS Feb. MD, 1923.

Filed Oct.

18, 1921 5 sheets-sheet 1 1. \I/ n) \Q\\\l v l/VI/E/VTUR J: H. WEI/660% WITNESSES ATTORNEYS FQ bv 2, I I v J: H. REVgEso I SAFETY ATTACHMENT FOR BURNERS Filed Oct. 18, 1921 3 sheets-sheet 2 l1 TTOR/i/EYS 4 4,445,744 J, H. REVESQN SAFETY ATTACHMENT OR BURNER Flied Oct. 1a, 1921,

5 sheets-sheet 5 41 m" l lll Ill MENTOR H, Fave so ATTORNEYS i lighted match to turnonthegas.

il-enclosed, 1

50 1 Figure 7.31s a detail J Joan aannr le -vases, or Tees-e rrnn'rn, iNDIANAL erases erreonrirnnr ron renames.

wa 'iieaiinn filed mall-1a, 1321. serial in). males.

ToaZZ whom it may concern: 1

Be it known that l, JOHN Hamrr lim nson, a citizen of the United States and a resident of Terre Haute, in the county of Vigo and state of Indiana, have invented certain new and useful Improvements.in tia fetyAttachments for Burners; of which I .the followingis a specification. H

invention relates to improvements in 1 safety attachments for burners, especially.

gas burners forstoves, lamps, and the like,

i Q and it consists in the constructions,wco1nbi nations and modeof operation herein described and claimed.

4 One ()ftheforeroost (ibjects of the invej 1 tion is to provide a'gsirnple b'l tn liahle ventsthe escape of gas or other fuel from a the burner unless such fuel 1s. ignited} 13:1; A further j objject of the invention. is to provide 'a safety attachment, for burners s whlch involves the necess ty. of applying a A. further obj ect of the invention 1 is to provideasafety"attachmentufon burners in whlch the gas valve is held open by instru- 9 rnelntalities which (are rendered iactive by wheat radiatingifromwthe burner. I

Other objects and advantages will appear in the followingspecification, reference being had to the accompanyingdrawings, in

Figure 11 is a diagram illustratingiall of t ff the operating" parts] of the safety attach ment, a

2 is a perspective vievv 'of a gas stove .illustratingthe application ofthe iin provedsafety attachment, i p Figure 3 is a diagram illustratinghthe po- 4e sitioiiuof the expander relative to the burner when the main gas inlet valve is Widekopen,

Figure. 4:. is a"diagra1n illustrating the position of the expander relative to the burner -.When*the main valve is: nearly :Figure [5. is longitudinal section ofthe controller, more full described below,

Figurefi is a detailperspective.vieW of the rubber diaphragm, and i perspective: view of thevalve lifter. v

1 lit is the purpose of the inventionto make use of heatforr establishing andmaintaining a fiowof orotherxfuel toaburner. It is 5 5necessar to apply a. lighted thatch toanexpander before a ball check valvewill raise to letthe pass to aburner. It is also necessary to open the 11121111 gas valve in order to establish a flow of gas in thefirst place. The expander is carried-by a part of the valve and the former is automatically adjusted in relationship to the burner in accordance with the amountof opening of the main valve. Consider the diagram in Figure 1, which is a development of the safety attachment clearly illustrating the operation. The main gasvalve 1 is opened by turning the handle 2 (Figures 2 and 5) so that a flow. ofgas is established in the pipefi Which leads to the top of the main chamber 4 of the controller, Where .it is. stopped by the ball check valve The plug of the gas "valve carries a lever 6.

Asthe gas; valve 1 is opened, the lever 6 raisesa crosshead]? the leirer having a bent end .8 which operates 1n a horizontal slot 9 i in the crosshead; The latteris guided by vertical rods 10 and there is sufficient 'fIlC-px tion between the vertical guides and the crosshead to maintainthe latter inanv ad justed position. This function is also aided bvthe friction ofthe plug in the gas valve.

1 w The crosshead 7 carries a steel tube 11 Whiclr'is surmountedby the expander 12.

Theexpander consists of a closed ran containing alrl Assume the expander 12 to be in the positionillustrated in Figures 1 and 3, l

at vvhich time the main valve is opened j.

ide. i A lightedinatch. applied to the expander 121Will causeuan expansion of the air and the inflation of a rubberdiaphragm 13in a supplemental chamber 14 of the controller, theidiaphragin 13 lIElVlIlQj connection with the hollow tube llj of the expander through a flexible. tube .15. q The purpose of the between the expander and the diaphragm at all. positions flation of. he diaphragm 13 (which takes but a very shorttirne) the stem 16 is raised, in

turn lifting the ball check valve 5 from its p ng atythe' burnershould be 1 nited.

5 raised so that the flow ofgas may con.-

tinue lit may be desired to turn the tree "down so-as to produce low flame. I The ofthe cr-osshead 7. Uponin-v flexible tube is to maintain communication.

seat l? andestablishing the flow of gas from the pipe fi to the burner B. The gas is compensated for by the reduction in spacebet-ween the burner and the expander. the result being substantially that obtained hetore, namely the air in the expander column is kept heated and the valve 5 is kept elevated.

The diagrams in Figures 3 and a illustrate the'adjustiuent oi the expander 12 in relationship to the burner B in proportion to the amount oropening of the main gas valve. The amount of? travel of the expander equals the radiusol the lever 6 which is made to assume its extreme position in a vertical line by turning the handle 2 from its normal rest position rip it ales to the left of the pipe to a similar right angular position at the right of the pipe 3. l Vhen the handle 2 is in the first position. the crank 6. crossliead 7 andexpander 153 are at the extremity of their lowermost movement s an'd'the valve 1 is closed. When these parts are moved to approxi. .ately the mid position (Figure the valve 1 is wide open. and when the handle 2 is moved to the latter position the crank 6 crosshead 7 and expander '12 are at the upper extremity of their movements. again closed.

In addition to the parts described above. thecontrollere has a circular base 17 from which stems 18 depend (Figures 1 and Themain valve '1 is then forithe purpose of supporting a volrc 19.

This yolre has a boss in which a screw 20 is threaded for the purpose of holding the supplementalichamber 14: in place. I

.ThlS supplemental chamber comprises a short section of glass tubing (Figure 5) which engages rubber washers it both edges, for the purpose of making ens-tight joints. The upper washer is seated in a recess in the bas 17. The lower washer is seated in a recess in the entrance plate 22 which includes the chamber 23 to which the heated or expanded air'from the expander 12 is admitted.

The screw 20 enables removing the entrance plate 22 and its carried parts, so that the diaphragm or balloon 13 may be renewed. The rubber of which this diamade dries out intime so that it requires to be replaced. Figure 6 shows one of the diaphragms in place on the entrance plate. The diaphragm includes a metal base 24 which is screwed in place onthe threaded stud 25 in the center of the plate 22. In order that access may be had to the ball valve 5, lifter l6, etc. the controller 4 is'made in sections as sho n in Figure 5.

The various parts are unscrewed for the purposed'escrlbed. The stove to which the.

quantity of heat.

Fuel to a bu improved safety attachment is applied, is shown in a conv, itioi'ial manner in Figure r. but may be briefly described as comprisino up} er and lower tables and 27. The r a 28 separate the tables and rods support ti e burner structure. The table 26 furnishes a hearing or guide for the vertically movable steel tube 11. The table 27 furnishes a base for the guide 10.

ll hile the construction and :u".'an;.: nrciu of the improved safety zu'iurbnicut 'i'or burners as herein described and chimed. i.- that oi a generally preferred l'ornr, obri ously modifications and rharuzcs may be made without departing tron] the sp rit o' the invention. or the scope oi the claims,

I claim l. A gas valve having); means tor moving a device containing: 0. thermally sens tive substance into a predetermined relation-hip with a burner as the valve is turned. and means which is influenced by the expansion of said substance by the ru iiration ol' li a to said device to establish a l on oi gas from the valve to tl c burner.

2. The combination of a valve for supply- 1 115521 burner with fuel. and a device containing a thermally sensitive substance adapted to assume 'arious positions in respect to the burner in accordance with the amount of opening of the valve.

3. The combination oil :1 valve or supply-- ing fuel to a burner. and means which is moved as the valve is turned to in turn position a device cruitaining :1. thermally sensitive substani e in respect o the bu rnor and in proportion to the position of the valve so that it may receive a substantially constant 4i. filidable means supporting a device. containing}; a thermally sensitive substance. a valve pri uxrilv controllingthe (low oi int-ans for moving the slidable 111621115; as the valve is moved to position said device in respect to the burner in a(: cort ance with the amount oi opening: of the valve, and a secondary Has control valve held open by the expansion of said substance while fuel csraping at the burner remains ignited.

5. A valve secondarily controllingthe flow of fuel to a burner, a device containing a substance rendered sensitive by heat from the burner to keep said valve open. and a valve primarily controlling); the flow oi? fuel. including means for adjusting. said. device closer to the burner as the primary valve is moved toward a closed position.

6. In combination with a burner, manually l'll 7. A valve held open by the effect of heat from a burner to which it admits fuel, a devicewhich is burner to maintain said effect r 'ardless of variations in the radiant heat, including flexible connection winch maintains the coinn'iunication between said device and the burner. i

8. in coml'iination with a burner, a valve which controls the flow of fuel to the burner,

another valve which controls the flow of fuel to the first valve, a diaphragm containing a thermally sensitive substance for mo r- Lnrg; the first valve, and a 15 device containing; some of said substance hat communication w th that of the diaphragm adapted to be moved into a location to receive a predelei-mined amount of heat from the burner when said other valve is moved, but requii ingthe application of a lighted match to open the first valve before fuel can escape at the burner for ignition.

A valve which controls the flow offuel to a burner, an expander wliich is adjustable in. respectto the burner, and a flexible connection from the expander to a diaphragm,

allcontaining a thermally sensitive sulr stance, which keeps the valvefopen by the effect of heat from theburner on the substance 1n the expander.

1.0. In combination with a burner, awvalve which controls the flow of fuel to the burner,

a crossheadcarrying an expander, another valve controlling the flow of fuel to the first valve and shifting the crosshead as it is turned to adjust the expa itlerin respect to "the burner, and a diaphragm with a flexible connection to the expaiiider forming ELCOI]: tamer With the ex antler of a substance sensitive to heat from the hurner to flex the diaphragm and open the first valve.

iii. In combination with a burner, an expander carried by a crossheadwhich moves on hides, and. a fuel valve with means in connection to move the crosshead and adjust the expander in respect to the burner.

12. In combination With a burner, a thermostatic fuel controlling apparatus in and adjustable in respect to the coininunication with, an expander both. of "'Wll lCll contain athermally sensitive substance which is influenced by heat from the burner to flex said diaphragm, and. a gas tigl'it container for the diaphragm in Wl'l'lOll it flexes to move in d valve.

let. in coinhinatinn with a burner, a controller having a fuel conduit leading: to the burner, a valve in the controller for checking the passage of fuel to the conduit, a diaphragm for moving the valve, having comniui'iication with an expander both of which contain a thermally sensitive substance which is influenced by heat from the burner to flex said diaphragm; a gastight cor1- tainei. fertile diaphragm in which it flexes.

to move said valve, and means for applying pressure to said container to make it gastight.

i5. comprising a compartment with a valve, a second compartment with a conduit leading to the burner, a third compartment having;

a diaphragm containing a thermally sensitive substance, and lifting means extending; from the first to the last compartment to displace the valve when the substance insaid diaphragm is affected by heat.

16. A controller for fuel for a burner, in cluding means for lifting a valve which controls the flow, a diaphragm containing a thermally sensitive substance for moving said means, and a cyhnder, includlnp; a plate at which said substance has an entrance, held (in place on the controller by compresslon means which provides a gas-tight joint for the diaphragm. i

JOHN HARRY REVESON.

A controller for fuel for a burner, 

